Duplicator.



`A. B. SALIGER.

DUPUCATOR.

APPLxcATxoN man Amen. m5, y l 29734O4 Patented Mar. 18,1919.

3s 5 SHEETS-SHEET 2. W Mm 919m i 32 ql 93 'Fig-.6

-A. B. SALIGER.

DUPLICATOR.

APPLICATION FILED APRJQ. |915.

Patented Min'. 18, 1919.,

..| I I I l I l l I I I l IIT? U @L I @Hozvnc I3 A. B. SALIGER.

DUPLICATOR.

APPLICATION FILED APR.20. 1915.

Patented Mar. 18, 1919.1

5 SHEETS-SHEET 4.

Q/VE names:

"UNI

ALOIS BNJAMIN SALIGER, OF NEW YORK, N. Y., T0 THE BECK DUPLICATOR COMPANY, A

ASSIGNOR, BY MESNE ASSIGNMENTS, CORPORATION 0F NEW YORK.l

DUPLICATOR.

Specification of Letters Patent.

Patented Mar. is, raie..

Application led April 20, 1915. Serial No. 22,561.

.city and State of NewYork, have invented certain new and useful Improvements in Duplicators, of which the following is a specification.

The inventionrelates to duplicators, and more particularly to the type of such machines provided with a duplicating surface, usually composed of a gelatinous compound, adapted to receive negative or reversed impressions, and rolling means for pressing a sheet of paper orthe like thereupon to communicate suchy an impression or to receive same therefrom as the case may be.

One ofthe principal objects of the. invention is to providea machine ofthe type mentioned in which the operation of placing the paper in contact with the surface, taking the impression, and removing the paper,L may be performed eiiciently, quickly and easily. p

The invention consists-in the novelv construction, arrangement and combination of various devices, `elements and parts as shown in the accompanying drawings, and hereinafter more particularly described.

In the said drawings, Figure 1 is a side elevation of a duplicator constructed according to my invention; Fig. 2 is an end view of the same, looking from the left of Fig. 1; Figs. 3 to 7 inclusive are views showing details of the roll for the duplicating lm and the means for securing and operating the same, as hereinafter described; Fig. 8 is a plan view; Fig. 9 is a longitudinal vertical section taken on the line 9-9 of Fig. 8; Figs. '10 and 11 are diagrammatic views illustrating a modified form of the'invention in which a crank and gear-wheel are employed to operate the impression roller, as hereinafter described, and Fig. 12 is a diagrammatic view showing in detail means for elevating an edge of a sheet of paper when in the duplicator, as hereinafter described. l

In carrying my invention into eect in the forms thereof which I have selected for description and illustration in this application, and referring now to the form in which the carriage or frame in which are journaled the impression and stripping rollers is moved directly by hand, rather than impression and by a crank and ear as will be hereinafter described, and viewing now more particuy larly Figs. 1, 8 and 9 I provide a base 20, to which are secured uprights 21 upon which is supported a frame comprising end members 22, inner side members 23 which are provided with racks 24, and outer side members 25, preferably in the form of cylindrical rods. The inner side members 23 may if desired be integral with the end members 22, the latter being provided in their ends, which project beyond lthe inner side -members 23, with sockets adapted to receive the rods 25, whlch may slide in saidl sockets but which may Vwhen desired be secured against such sliding by pins or similar means. rIhis construction is provided in order that the rods 2'5 may be partially orl entirely' removed from the frame in order to assemble or disassemble the movable frame or carriage, hereafter to be described, from the remainder of the apparatus.

Extending across between -the inner side members 23 is a bed 33,- over which the` duplicating film 41 passes the portion not in use being wound upon rolls 34, journaled in the uprights 21, the detailed constructien..

and means for operating of which will be hereafter described. I prefer to interpose between the bed 33 andthe duplicating film 41 a strip of suitable fabric 70, the ends of which are passed around the ends of the bed and secured underneath the same by plates 71 which are held by wing-screws 72. The movable frame or carriage above referred to will be best seen in elevation in Figs. l and 9, and in plan in Fig. 8. In the form shown in the drawings it comprises four principal parts--a frame proper, a swinging operating handle, a paper platform extending out over the-apparatus, and stripping rollers, though the platform is not essential and may be dispensed with if desired. The frame roper is formed of a pair of side members 2 provided with downwardly extending lugs 28, perforated so as to ada t them to slide upon the rods 25 (see Fig. 2). @ne end of the platform 29 is secured to the sidey members 27 by screws 30 (see Fig. 2) and the remainder of the platform, which may be constructed ofsheet metal or such material, extends out as shown in Figs. 1, 8 and 9. Pivotally secured at 31 to the side members 27 is the operating handle 32, in

` and fro. lmembers 27 is provided to prevent the the lower part of which are journaled the impresslon and stripping rollers for depressing upon the duplicating medium a sheet of paper or the like and for stripping the same therefrom, and the up er part of which handle comprises a cross ar 35 by which the carriage may be moved-to A paper stop 74 secured to the paper when inserted in the apparatus from passing in too far.

The location and construction of theim`r pression and stripping rollers will now be described. Referring` more particularly to Fig. 9, 36 is the impression roller, 37 and 38 are the stripping rollers, and 39 is a small auxiliary roller for operating the means, hereafter to be described, for elevating an edge of the paper preparatory to stripping the same from the duplicati medium. The roller 36 is journaled in bloc s 90, the outer ends of which may restagainst the sides of the members 32. These blocks 90 slide in vertical slots 91'in plates 92, and are pressed downward by springs 40. These plates 92 J rest against inwardly extending lugs 92 invtegral with the members 32, and are secured thereto by means of screws 93. Toward the right of Fig. 9 are the .stripping rollers 37 and 38, mounted in the plate 92 in a manner similar to the'roller 36. No slots-'are provided for the roller 37, but the block 94 holding the ends of the roller 38 slide in slots 95, and the roller 38 is pressed against the roller 37 by means of springs 82 acting on the 'blocks 94. It will be seen that by this construction the assembling-of the impression andstripping rollers in the frame is greatly facilitated. The roller 37 f is rovided at its end with a gear wheel 42 best shown in Fig. l) meshing with a gear wheel 43 on the pivot 31, this gear wheel 43 meshingin turn with the rack 24. It is obvious that the device termed the impression rollel` 36, need not necessarily be a rotatable device, as a non-rotatable or scraping device would answer the same purpose.

To the left of Fig. 1 I provide a device,

.shown diagrammatically and on a larger scale in Fig. 12, adapted to lift the edge of the paper after it has received its impression, so that it may pass between the stripping rollers 37 and 38.- This device comprises a finger 44, adapted to be depressed by the roller 39 as the carriage is moved' thereover. This finger 44 i-s pivoted in the main frame at 45. Also pivoted at45, and rigidly attachedfto the linger 44, is an arm 46 having integral therewith a strip 47 passing across the width of the duplicator. The e I other end of the strip 47 may be integral with an arm similar to 46, pivoted in the same manner as 45, although it is obvious that the roller 39 and finger 44 need not be duplicated.

In order to adapt the apparatus for use with sheets of paper of different sizes, it 1s desirable to provide means for limiting the backward `motion of the carriage and its rollers, or in other words, for fixing the point ,from which the forward motion will begin, so that the end of the paper which is last depressed by the impression roller may always be in operative relation to the edge 'elevating device above described.' For this purpose I `provide the adjustablev stops 48. These consist of sleeves surrounding the rods 25slidable and revoluble thereon but capable of being fixed at anyV desired point -by meansof setvscrews 49. Extending lat- `erally'fromV these sleeves 48 and integral therewith are arms 50, having ends adapted to engage with the teeth of the rack 24.

the frame 21, and provided with an operat` ing lever 55. The rollers 34 are provided at one end with a projection 56 adapted to` engage with the socket 51, and at the other 'end with a pin 57, adapted to rotatably fit in a socket 58 in the other member 21. A spring59 attached to the member 21 holds the roller 34 securelyv in engagement with the socket 51 (see Fig. 3). In the modification shown in Figs. 10 and 11, I provide a frame, bed, duplicating surface, &c., similar to analogous parts described above, and a carriage comprising members 60 analogous to the members 32, and rollers 62, 63 and 64, analogous respectively to the rollers 36, 37 and 38.A I provide agear'wheel 61, analogous to the wheel 43. This gear wheel 61 meshes with teeth on the end of the roller 63, and also meshes with the rack 24. A crank 65 is provided,

by which the gear wheel 61 may be operated.

This modification is intended for use on large machines, which are too heavy to be conveniently operated by means of the handle 35, its operation differs in'no way from that of the form first described, except that the crank 65 is used to operate, instead of the handle 35, thus securing a.' gain in leverage.

The assembling and operation of -a duplicator embodying my invention is as follows:

The end -of the strip of duplicating material 41 is suitably secured to one of the rollers 34, wound thereupon, and the other end secured to the other rolleil 34. These rollers are inserted by pressing the p'in 57 into the socket 58. against the tension of the spring 59, until the projection 56 may be made to engage with the socket 51, the roller being then held between the members 21. Vhen it is desired to remove one of the rollers, it is pressed toward the left of Figs. 3 and 4, until the projection 56 is disengaged from the socket 51, when the roller may be lifted clear of the frame.

The duplicating medium passesfrom one roller 34 over the bed 33 to the other roller 34. It is tightened by turning the cranks 53, moving the ratchets 52, which are engaged by the pawls 54. These pawls can -beA moved out of engagement with their ratchets' by operating the levers 55. One of the pawls is held out of engagement when it is desired to roll the duplicating medium from one roller to the other for the purpose of eX- posing a fresh portion for use.

The duplicating medium beingV properly in position, a negative or reversed impression of the matter which it isdesired to copy, may 'be transferred thereto in the usual manner.

A sheet of paper? 66 on which it is desired to make a copy is placed in position on the portion 29 of the carriage. The operating handle is pulled backward and downward, so that the members 32 will occupy the position shown by the full lines in Fig. 9, and the impression roller 36 will be raised above the duplicating surface, which allows the end of the paper to be slid thereunder, until the end rests against the sto'p 74.`

The handle 35 is moved toward the left of Fig. 9. The first result of this is to cause the members 32 to swing forward on their pivots 3l, and assume the position shown by the dotted lines in Fig. 9, causing the impression roller to descend upon the paper and force the end of the same down and into contact with the duplicatingv medium, this depression of the paper causing thel edge to clear the stop 74. As the movement of the handle 35 continues, the entire carriage moves toward the left of Fig. 9, the table 29 sliding out from under the paper 66, more and more of which is successively brought into contact with the duplicating medium 41, until the entire paper has been passed over by the impression roller. y l

At the end of the leftward movement of. the carriage, the roller 39 passes over and depresses the finger 44, raising the strip 47, which in turn elevates the end of the paper, so that as the carriage is moved back toward the right, the paper will pass out between the stripping rollers 37 and 38 (see Fig. 12) more and more paperv being successively stripped from the duplicating medium as the rightward movement of the carriage is continued, until the carriage has reached its original position,` and the entire sheet of paper has passed through the stripping roll- `I claim as new and desire to secure by of said paper.

ers. 1f desired a stop may be provided to limit the leftward movement of the carriage, in order that the roller 39 may not pass entirely over the finger 44.

A new sheet of paper is then placed in position, vand the operation repeated, in this manner as many ycopies as. desired may be taken, and the crank 53 then operated so as to bring into position a fresh portion of the duplicating strip adapted to receive a new negative impression.

The stop `48 should be so set that the end of the paper used will pass just beyond the strip 47. This stop 48 is adjusted by loosening the set screw 49, partially rotating it so as to disengage the arm 50 from the rack, and sliding it along the rod 25 to any point desired, whereupon upoi the rack 24, and the set screw 49 tightene 'The advantages of "my invention will be obvious from what has been said concerning its construction and Inode of operation.

Having thus described my invention, wliat etters Patent is as follows: I n

1. 1n a duplicator, the combination with a frame havinga bed, and a duplicating film thereon; of a carriage slidably mounted on said frame and provided witha stop rigidly secured thereto and adapted to limit the longitudinal movement of a sheet of paper and with means adapted to depressa sheet of paper or the like on to said duplicating iilm.

2. 1n a duplicator, frame having a bed, thereon; of a carriage slidably mounted on said frame andl provided with a stop rigidly secured thereto and yadapted to limit the. longitudinal movement of a sheet of paper an provided with means adapted to depress a sheet of paper or the like on to said duplicating film and to be raised above said bed, thereby leaving a space into which may be inserted the end of suchsheet of paper.

3. In a duplicator, the combination witha frame having a bed, and a duplicating film thereon; of a carriage said frame, said carriage comprising rocking members, means borne by said rocking members adapted to depress a sheet of'lpaper or the like on to said'duplicating film, and a stop rigidly secured to -said carriage and adapted to limit the longitudinal movement 4. 1n a duplicator, the combination with a frame having a bpd, and -a duplicating film thereon; of a c ar iage slidably mounted on said frame and provided with a stop rigidly secured thereto and adapted to limit the longitudinal movement of a sheet of paper, and

with means adapted to depress such sheet of paper on to said duplicating film; and an,

adjustable stop on said frame adapted to limit the movement of saidcarriage.

the combination with al and a duplicating {ilmv the arm 50 is depressed slidably mounted on of sald carriage,

5. In a duplicator, the combination with a frame having a bed, and a duplicating ilm thereon; of a carriage slidably mounted Qn .Said frame and provlded with means adapted to depress a sheet of paper onto said duplicating-film and an adjustable stop on said frame adapted to limit the movement said adjustable. stop comprising a sleeve, a rod, a set screw in said sleeve, and an arm on said sleeve adapted to engage with a rack on said frame.

6. In a duplicator, the combination with a frame having a bed, and a lduplicatin film thereon; of a carriage slidably mounte on said frame and provided with a stop rigidly secured thereto and adapted to limit the longitudinal movement of a sheet of paper and with means adapted to depress a sheet of paper or the like on to said duplicating film, and means adapted to strip slch sheet of paper from said duplicating m.

7. In a duplicator, the combination .with a frame having a bed, and a duplicating film thereon; of a carriage slidably mounted on said' frame and provided with a stop rigidly secured thereto and adapted to limit the longitudinal movement of a sheet of paper and rovided with means adapted to depress a s eet of paper or the like on to said duplicating film and to be raised above said bed, there leaving a space into which may be inserted the end of such sheet of Paper,

8. In a duplicator, the combination with a frame havin a bed, and a duplicating lilm thereon; ofg a carriage slidably mounted on said frame, said carriage comprising rockingl members, means borne by said rocking members adapted to depress a sheet of paper or the like on to said duplicating film, means borne by said rocking members adapted to strip such sheet of paper from said duplicating film, to said carriage and ada ted to limit the longitudinal movement o said paper.

9. In a duplicator, the combination with a frame having. a bed, and a duplicating film thereongofa .carriagemslidably mounted on said frame and provided with astop rigidly secured thereto and adapted to limit the longitudinal movement o a sheet of paper; means adapted to depress such sheet of paper on to said duplicating film; means adapted to strip such sheet of paper from said duplicating film; and an adjustable stop .on said frame adapted to limit the movement of said carriage.

10. In a duplicator, the combination with a frame having a bed, and a duplicating film thereon; of a carriage slidably mounted on said frame and provided with means adapted to depress a sheet of paper on to said duplicating film; means adapted to armon said sleeve, and a and means adapted to strip such sheet of paper from said duplicating film.

,said duplicating film; means a and a stop rigidly securedl strip such sheet of paper from said duplicating film; and an adjustable stop on said frame adapted to limit the movement of said carriage; said adjustable stop comprising a sleeve revolubly and slidably mounted on said frame, a set-screw in said sleeve, an rack on said frame adapted to engage with said arm. v

11. In a duplicator, the combination with avframe havin a bed, and a'duplicati film thereon; o a carriage slidably mounte on said frame and provided with a sto rigidly secured thereto and adapted to limit the longitudinal movement of -a sheet of paper; means adapted to depress such 'sheet of paper on to said duplicatin lm; means adapted to strip such sheet o paper from said lilm; and means adapted to elevate an edge of such sheet of paper whereby it may be engaged by said stripping means.

v .12. In a duplicator, the combination with a frame having a bed, anda duplicating iilm thereon; of a carriave slidably mounted on said frame and provided with a stop rigidly secured thereto and adapted to limit the longitudinal movement of a sheet of paper, means adapted tov depress a sheet of paper lon to said duplicating film; lmeans adapted to strip such sheet of paper from said film; and means adapted to elevate an edge of such sheet of paper whereby.v it may be engaged by said' stripping means; said elevating means being adapted to be oper-v ated by said carriage as it comes to the end of its movement over said bed.

13. In a duplicator, the combination with a frame havin a bed, and a duplicating film thereon; oig a carriage slidably mounted on said frame and provided with means adapted to depress a sheet of pa er on to apted to strip such sheet of paper from said film; and means adapted to elevate an edge of .such sheet of paper whereby it may be engaged by said stripping means; said means comprising an arm pivotally secured to said ame, a second arm pivotally secured to said frame and provided with an elevating member, said arms being rigidly attached to each other, and a roller on said carriage adapted to depress said first named arm.

14. In a duplicator, the combination lwith a frame having a bed, and a duplicating lm thereon; of Aacarriage slidably mounted on said frame and provided with a stop rigidly secured thereto and adapted to limit the longitudinal movement of a sheet of paper; means adaped to depress such sheet of paper on to said duplicatlng film; means adapted to strip such sheet of paper from such film: means adapted to elevate an edge of such sheet of paper, and an adjustable stop on said frame adapted. to limlt the movement of said carriage.

15. In a duplicator, the combination with bed, and a 4said second gear Wheel havin a frame having a bed,

a frame provided with a rack and having a duplicating film on said bed; of a rocking frameslidably mounted on said frame; a roller journaled in said rocking frame adapted t0 depress a sheet of paper on to said duplicating film; a pair of rollers journaled in said rocking frame adapted to strip such sheet of paper from said film, one of said stripping rollers being provided with a gear Wheel; and a second gear Wheel journaled' in said rocking frame at the point Where it is pivotally secured to said carria e, and adapted to engage with said 'rack an with the gear Wheel on said stripping roller. f

16. In a duplicator, the combination withI a frame provided with a rack and having a bed, and a duplicating film on said bed; of a rocking frame slidably mounted on said frame; a roller journaled in said rocking frame adapted to depress a sheet of paper on to said duplicatin film; a pair of rollers journaled in said roc ing frame adapted to strip such sheet of aper from said film, one of said "stripping ro 1ers being provided with a gear Wheel; and a second gear Wheel journaled in said rocking :frame at the point Where it is pivotally securedto said carriage, and adapted to engage with said rack and with the gear Wheel on said stripping roller;

a crank rigidlysecured thereto, Where y said gear Wheel may be rotated and said carriage moved.

17. In a, duplicator, the combination with a frame provided With a rack and having a bed, and a duplicating film on said bed; of a rocking frame slidably mounted on said frame; a paper stop on said rocking frame;

a roller journaled in said rocking frame f adapted to depress a sheet of paper on to said duplicating film; a pair of rollers journaled in said rocking frame adapted to strip such sheet of paper from said lm, lone of said stripping rollers being provided with a gear Wheel; and a second gear journaled in said rocking frame at the point Where it is pivotally secured to said carriage, and adapted to engage with said rack and with thev gear Wheel on said stripping roller.

18. In a duplicator, the combination With and a'duplicating film thereon; of a carriage slidably mounted on said frame and .provided with an extension adapted to support a sheet of paper or the like, with a stop rigidly secured to said carriage and adapted to limit the movement of said paper longitudinally and said carriage being also provided with means adapted to depress said sheet of paper or the like 0n to said duplicating film.

19. In a duplicator, the combination with a frame having a bed, and a duplicating film thereon; of a carriage slidably mounted on said frame and provided with an extension l depress `which may adapted to support a sheet of paper or the like, with a stop rigidly secured to said carriage and adapted to limit the movement of said paper longitudinally and said carriage being also provided with means adapted to said duplicating medium and to be raised above said bed, thereby leaving a space into be inserted the end of such sheet of paper.

20. In a duplicator, the combination with a frame having a bed, and a duplicating lm thereon; of a carriage slidably mounted on .said frame, said carriage comprising rocking members, an extension adapted to support a sheet of paper or the like on said cara sheet of paper or the like ontoA riage, a stop rigidly secured to said carriage and adapted to limit the movement of saidV paper longitudinally, and means borne by said `carriage adapted to depress a sheet of paper or the like on to said duplicating film.

21. In a duplicator, the combination with a frame having a bed, and a duplicating film thereon; ofva carriage slidably mounted on said frame and provided with an extension adapted to support a sheet of aper or the like, with a stop rigidly secure 4to said carriage and adapted to limit the movement of said paper longitudinally, and an adjustable stop on said frame adapted to limit the movement of said carriage.

v22. In a duplicator, the co bination with a framehaving a bed, and a duplicating film, Y

thereon; of a carriage slidably mounted on said frame and provided with means adapted to depress a sheet of paper or the like on to said duplicating film, and a pair of rollers adapted to strip said paper from" said duplicatin film.

23. In a dup icator, the combination with a'frame havinga bed, and a duplicating film thereon; of a carriage slidably mounted on said frame; and provided with means adapted to depress a sheet ofpa'per or the like on to said duplicating film and to be raised above said bed, thereby leavin a space into which may be inserted the eng of suchsheet of paper, and a pair of rollers adapted to strip said paper from said film.

24. In a, duplicator, the combination with a frame having a bed, and a duplicating film thereon; of a carriage slidably mounted on said frame, said carriage comprising rockingmembers, means borne by said carria e adapted to depress a sheet of paper or e like on to said duplicating film; and a pair of rollers adapted to strip said paper from said film. v

25. In a duplicator, the combination with Y a frame having a bed, and a duplicating film adapted to strip said paper from said lm, andy an adjustable stop on said frame adapted ^to Vlimit the movement of said carriage.

plicating film; and an adjustable stop on said frame, said ad'ustable sto comprising a sleeve, a rod, a set screw 1n said sleeve, and

an arm on said sleeve adapted to engage with a rack on said frame.

27. In a duplicator, the combination with a frame having a bed, and a duplicating film thereon; of a carriage slidably mounted on said frame and provided with means adapted to depress a sheet of paperon to said duplicating film; a pair of rollers adapted to strip said paper from said film; and means adapted'to elevate an edgeof said paper, whereby it may be engaged by said stripping rollers.

28. In a duplicator, the combination with aframe having a bed, and a duplicating film thereon; -of a carriage slidably mounted on said frame andprcvided with zin-extension adapted to support a sheet, of paper or the like; means adapted to depress said sheet of paper on to said duplicating film; a pair of rollers adapted to stripl said paper from said lm; and means adapted to elevate an edge of such sheet of ,paper whereby it may be engaged by said stripdping rollers; said elevatlng means being a apted-to be operated by said carriage as it comes to the end 'of itsl stroke.

29. In aduplicator, the combination with a frame having a bed, and a duplicating film thereon; of a carriage slidably mounted on said frame; means adapted to depress a sheetl of paper pn to said duplicating lm; a pair of rollers adapted to strip such sheet of paper from said -lm'; and means adapted to elevate `an edge of said sheet of paper whereby itmay be engaged by said stripping rollers; said means comprising an arm pivotally secured to said frame, a Asecond arm pivotally secured to said frame andfprovided with an elevating member, vsaid arms being rigidly attached to each other, and means on said carriage adapted to depress said first named arm.

30. In a duplicator, the combination with a frame having a bed, and a duplicating film thereon; of a carriage slidably mounted on said frame; means adapted to depress a sheet of paper on to said duplicating iilm; a pair of rollers adapted to strip said sheet of paper from said ilm; means adapted to elevate an edge of such sheet of paper, and an adjustable stop on said frame adapted to limit the movement of said carriage.

31. In a duplicator, the combination with a frame provided with a bed, and a du licating film on said bed; of a carriage s idably mounted on' said frame and provided 70 with an extension adapted to support a sheet of paper` or the like; a frame secured to said carriage; a roller journaled in said last-mentioned frame adapted to depress such sheet of paper on to said duplicating film; and a pair of rollers journaled in said frame and adapted to strip such sheet of paper from said lilm.

32. In a duplicator, thel combination with a frame provided with a bed, and a dupli- 8( cating lm on said bed; of a carriage slidably mounted ony said frameg'said carriage comprising a rocking frame; a roller journaled in'vs'aid rocking frame adapted to depress a sheet of paper on to said duplicating hn; and a pair of rollers journaled in said rocking frame adapted to strip such sheet of paper from said iilm.

33. In a duplicator, the combination with a frame provided with a rack and havinga 91 bed; and a du licating film on said bed; of a carriage slida ly mounted on said frame; said carriage comprising a frame; a roller journaled in said last named :frame adapted to depress a sheet of paper on to said duplicating film; a pair of rollers journaled in said last named frame adapted to strip such sheet of paper from said film; one of said l stripping rollers being provided with a gear wheel; and a second gear wheel. mounted on- 1V said carriage and adapted to engage with said rack and with said rst named gear wheel. v

34. Ina duplicator, the combination with a frame provided with a rack and having a l bed, and a duplicating film on said bed; of a carriage slidably mounted on said frame; said carriage comprising a frame, a roller journaled in said last named frame adapted to depress a sheet of paper on to said duplil cating film; a pair of rollers journaled in said last named frame adapted to strip such sheetof paper from said Iilm, one of said stripping rollers being provided with a year wheel; and a second gear wheel mounte on l said carriage and adapted to engage with said rack and'with said first named gear wheel, said second gear wheel having a crank rigidlysecured thereto, whereby said gear wheel may be rotated and said carriage/ moved.

35. In a duplicator, the combination with a frame provided with a bed, and a duplicating film on said bed; of a carriage slidably mounted on said frame, said carriage comprising a frame, a paper-stop on said last mentioned frame, a roller journaled in press a sheet of paper on to said duplicating film; and a pair of rollers j ournaled in said ylast mentioned frame and adapted to strip such sheet of paper from said film.

36. In a duplicator, the combination with a frame provided with a bed, and a duplicating ilm on said bed; of a carriage slidably mounted on said frame; said carriage comprising av rocking frame, a paper stop on said carriage, a roller journaled in said last named frame adapted to depress a sheet of paper on to said duplicating film; and a pair of rollers journaled in said last named frame adapted to strip such sheet of paper from said film.

87. In a duplicator, the combination with a frame rovided with a rack and having a bed, and duplicating film on said bed; of

a carriage s idably mounted on said frame;

said carriag comprising a frame, a paper stop on said carriage, a roller Journaled in said last mentioned frame adapted to depress a sheet of paper on to said duplicating film; a pair of rollers journaled in said last mentioned frame adapted to strip such sheet of. paper from said film; one of said stripping rollers being provided with a gear wheel, and a second gear wheel mounted on'.

said carriage and adapted to engage with said rack and with saidA first named gear wheel.

38. In a duplicator, the combination with a frame having a bed, and a duplicating film thereon; of a carriage slidably mounted on said frame; said carriage comprising a frame provided with an inwardly extending lug, a slotted plate secured to said lug, a member adapted to slide in said slot, a roller journaled in said member and adapted to depress a sheet of paper or the like on to said duplicating film, and a spring adapted to press against said member.

39. In -a duplicator, the combination with a frame having a bed, and a duplicating lilm thereon; of a carriage slidably mounted on said frame; said carriage comprising a frame provided with van inwardly extending lug, a plate secured to said lug, a roller journaled in said plate and adapted to depress a sheet of paper or the like on to said duplicating lm, and a pair of rollers journaled in said plate and adapted to strip said paper from said lm.

40. In a duplicator, the combination with a frame having a bed, and a duplicating ilm thereon; of a carriage slidably mounted on said frame; said carriage comprising a frame provided with an inwardly extending lug, a slotted plate secured to said lug, a roller journaled in said plate and adapted to depress a sheet of paper or the like on to said duplicating film; a roller mounted in said plate and adapted to strip said paper from said ilm; a member adapted to slide in said slot, a second stripping roller journaled in said member, and a spring adapted to press yagainst said member, whereby said second stripping roller is maintained in close contact with said first stripping roller.

41. In a duplicator, the combination with a frame having a bed, and a duplicating film thereon; of a carriage slidably mounted on said frame; of a roller slidably journaled in said carriage and adapted to depress a sheet of paper or the like on to said duplicating ilm, and a spring adapted to bear downward upon said roller; and a pair of rollers journaled in said carriage and adapted to strip said paper from said film, one of said rollers being journaled slidably and provided with a spring adapted to maintain it in contact with said first named stripping roller.

In witness whereof I have hereunto signed my name this 17th day of April 1915.

ALOIS B. SALIGER. 

